Malicious PDF — malware analysis report

Static analysis result for SHA-256 6f722a813af26343…

MALICIOUS

PDF

39.0 KB Created: 2020-08-24 17:43:38 +03:00 Authoring application: wkhtmltopdf 0.12.5 (via Qt 4.8.7) First seen: 2026-05-09
MD5: dabe241ca3fe65153d94c37857909ce3 SHA-1: 3b8a94c87a22aafccedc32e32b736072bdf4368b SHA-256: 6f722a813af26343d6fbb506a0c92d5d75a931e461dc778b5625f2dcdc078f5d
214 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1059.007 JavaScript

The PDF contains multiple embedded links, with one specifically identified as a malicious redirector. The document body, though heavily obfuscated, contains a URL that matches the malicious redirector found in the heuristics. This suggests the document is designed to lead users to malicious infrastructure, likely for further exploitation or phishing. No scripts were extracted, but the presence of numerous links points to a phishing or content-luring attack vector.

Machine Learning

  • Nyx PDF Classifier malicious score 1.0000

Heuristics 6

  • PDF links to known malicious redirector infrastructure critical PDF_MALICIOUS_REDIRECTOR_LINK
    PDF contains a clickable URI to redirector infrastructure used by a known malicious PDF SEO/adware delivery campaign. These documents typically rely on user interaction and redirect chains rather than a PDF parser vulnerability.
  • Small PDF contains mass external PDF link farm critical PDF_SEO_LINK_FARM
    Small PDF contains many clickable external PDF links, mostly clustered on one host. This matches generated SEO/link-farm PDF carriers used to route users into malicious or unwanted-software delivery chains, rather than a normal document citation pattern.
  • Image lure linking to an SEO redirector (free-download phishing) high PDF_SEO_UTM_REDIRECTOR_LINK
    PDF embeds an image with little or no body text and a clickable link to a multi-word utm_term / FeedBurner-proxied SEO redirector — the 'free ebook / solution-manual / document download' phishing family that ranks for natural-language search queries and routes the user into a payload/redirect chain. The PDF carries no exploit; the risk is the linked destination. Flagged structurally (image lure + SEO redirector) so it does not depend on a ClamAV/ML signature, and regardless of how many filler text pages the lure carries.
  • Callback phishing phone lure medium SE_CALLBACK_LURE
    Document asks the user to call a phone number in billing, refund, subscription, fraud, or security context — consistent with callback phishing or tech-support scam patterns. Suppressed for legitimate-issuer (IRS/gov/official-form) or Microsoft license-boilerplate documents that carry no urgency or charge/dispute escalation.
  • Object number defined twice with different bodies info PDF_DUPLICATE_OBJ_BODY_INCREMENTAL
    The same indirect object (N G) is defined more than once with different body bytes. First-wins and last-wins readers will resolve different content, which is a parser-confusion shape used by targeted PDFs. Body-only differences are common in benign incremental updates, so severity is raised only when the duplicate carries active content.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://ttraff.cc/pify?keyword=hallelujah+sheet+music+violin+and+piano In PDF document text
    • http://gizexa.nepscholarshipfund.com/uploads/1/3/1/3/131379477/8840838.pdfIn PDF document text
    • http://nizimesa.mathemanomicon.ca/uploads/1/3/1/3/131379615/betefi_nanotu.pdfIn PDF document text
    • http://files.legacycaengineering.com/uploads/1/3/2/7/132711961/pomudaranupifad-tidototijidodeb.pdfIn PDF document text
    • http://diturunaj.bangsar-properties.com/uploads/1/3/1/4/131438096/tezurav-xalonubebad-tofuwizadasi-xegera.pdfIn PDF document text
    • http://www.ascendercorp.com/In PDF document text
    • http://www.ascendercorp.com/typedesigners.htmlIn PDF document text
    • http://www.daltonmaag.com/In PDF document text
    • https://cdn.shopify.com/s/files/1/0436/9743/8875/files/21136041532.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/6826/8448/files/lol_amumu_aram_guide.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0428/0942/6079/files/59289961052.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0435/4156/1503/files/51953476370.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0430/2376/1571/files/kipumefevun.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0433/4583/8248/files/98870917630.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0429/8535/7463/files/daboledagukikafiziral.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0438/9063/9016/files/73983613581.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8052/3678/files/59812201688.pdfIn PDF document text
    • https://cdn.shopify.com/s/files/1/0431/8907/6117/files/bangladesh_district_map.pdfIn PDF document text
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#In PDF document text
    • http://purl.org/dc/elements/1.1/In PDF document text
    • http://ns.adobe.com/pdf/1.3/In PDF document text
    • http://ns.adobe.com/xap/1.0/In PDF document text
    • http://ns.adobe.com/xap/1.0/mm/In PDF document text
    • http://ns.adobe.com/xap/1.0/rights/In PDF document text
    • http://scripts.sil.org/OFLIn PDF document text

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
font_00_sfnt_off00004ce8.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x4CE8 5196 bytes
SHA-256: b2f0169a5ef8bc8cc0f341f96b1c584bc6f7ea30400f8e8dc8c648fce5435eed
font_01_sfnt_off00005e71.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x5E71 10016 bytes
SHA-256: 91bbb73208fa7a80bef9b17172d4f4fc60f979416f69acd48fdbbb72aa0d45af
font_02_sfnt_off000080df.bin pdf-font-stream PDF embedded font (sfnt) at offset 0x80DF 4324 bytes
SHA-256: ff5f0ef16caf3e97cd1984b3a03ea88e11eab8cf63d2ee006085a4b9995833f3